At a logistics warehouse in Phoenix, investigators conduct a coordinated, court-authorized seizure of multiple devices...

The correct answer is C because the scenario is specifically about preventing alteration of evidence during seizure and packaging. In CHFI v11, evidence preservation is a central requirement, and that includes protecting digital devices from physical, environmental, or procedural contamination that could change their original state. The question mentions foreign data, interference, and handling errors, all of which directly point to contamination risks. Protection of rights and clarity of documentation are important legal and procedural concerns, but they do not best capture the immediate handling objective described. Comprehensive collection is about gathering all relevant evidence, while the question focuses on maintaining the integrity of what has already been seized. In forensic practice, avoiding contamination means using careful packaging, proper labeling, controlled handling, and preservation methods that keep evidence as unchanged as possible from the moment of seizure. That is especially important when devices may later be examined for latent traces, metadata, or volatile conditions affected by mishandling. For CHFI exam purposes, the procedural focus that best supports this objective is avoiding contamination.